unit tests

webarena/tests/test_infeasible.py

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+import gymnasium as gym
+import logging
+import os
+import pytest
+import random
+
+from tenacity import retry, stop_after_attempt, retry_if_exception_type
+
+# register gym environments
+import browsergym.webarena
+
+# bugfix: use same playwright instance in browsergym and pytest
+from utils import setup_playwright
+
+
+__SLOW_MO = 1000 if "DISPLAY_BROWSER" in os.environ else None
+__HEADLESS = False if "DISPLAY_BROWSER" in os.environ else True
+
+INFEAS_TASK_IDS = [101, 115, 166]
+FEAS_TASK_IDS = [165, 187, 199]
+
+
+@retry(
+    stop=stop_after_attempt(5),
+    retry=retry_if_exception_type(TimeoutError),
+    reraise=True,
+    before_sleep=lambda _: logging.info("Retrying due to a TimeoutError..."),
+)
+@pytest.mark.parametrize(
+    "task_id,infeasible",
+    [(task_id, True) for task_id in INFEAS_TASK_IDS]
+    + [(task_id, False) for task_id in FEAS_TASK_IDS],
+)
+@pytest.mark.slow
+def test_infeasible(task_id, infeasible):
+    env = gym.make(
+        f"browsergym/webarena.{task_id}",
+        headless=__HEADLESS,
+        slow_mo=__SLOW_MO,
+    )
+    obs, info = env.reset()
+
+    action = 'report_infeasible("Unachievable task.")'
+
+    obs, reward, term, trunc, info = env.step(action)
+
+    if infeasible:
+        assert term == True and reward == 1.0
+
+    else:
+        assert term == True and reward == 0.0
+
+    env.close()